U.S. Constitution - Article 6

Article 6 - Debts, Supremacy, Oaths

All Debts contracted and Engagements entered into, before the Adoption of
this Constitution, shall be as valid against the United States under this
Constitution, as under the Confederation.

This Constitution, and the Laws of the United States which shall be made in
Pursuance thereof; and all Treaties made, or which shall be made, under the
Authority of the United States, shall be the supreme Law of the Land; and the
Judges in every State shall be bound thereby, any Thing in the Constitution or
Laws of any State to the Contrary notwithstanding.

The Senators and Representatives before mentioned, and the Members of the
several State Legislatures, and all executive and judicial Officers, both of
the United States and of the several States, shall be bound by Oath or
Affirmation, to support this Constitution; but no religious Test shall ever be
required as a Qualification to any Office or public Trust under the United
States.